ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
Latest Magazine Issues
Jul 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
August 2026
Nuclear Technology
July 2026
Fusion Science and Technology
Latest News
The deadline arrives: Checking in on the Reactor Pilot Program
On May 23, 2025, President Trump signed Executive Order 14301, “Reforming Nuclear Reactor Testing at the DOE,” which instructed the Department of Energy to create a Reactor Pilot Program (RPP)—a new system in which companies could pursue DOE authorization to build and test their first-of-a-kind nuclear technologies. EO 14301 set an ambitious goal for that program: three reactors achieving criticality by July 4, 2026.
G. Palmiotti, M. Salvatores, J. C. Estiot, G. Granget
Nuclear Science and Engineering | Volume 84 | Number 2 | June 1983 | Pages 150-155
Technical Note | doi.org/10.13182/NSE83-A17721
Articles are hosted by Taylor and Francis Online.
Sensitivity methods based on generalized perturbation theory are very valuable tools for the reactor designer in many areas of interest. In general, the first-order formulations are routinely used, and higher order effects are neglected. In the present Note, we have developed a practical approach to take into account higher order effects in time-dependent sensitivity analysis in the nuclide field for fuel-cycle-related problems, and we give examples of its use in cases of interest.